Zte 302ZT User Manual page 78

Problem
 (U)SIM card invalid.
 You are not within the network's
Unable to connect service area.
to the network.
 Poor signal.
You cannot answer You have activated the Call Barring
incoming calls. feature.
 You have activated the Call Barring
feature.
You cannot
make outgoing
 You have activated the Fixed Dial
calls.
Number feature.
PIN Code is You have entered an incorrect PIN
blocked. code three consecutive times.
Unable to enter
The phone book's memory is already
information into
full.
the phone book.
78
Possible causes Possible solution
Contact your service provider.
Check the service area with
your service provider.
Move to an open space, or if
you are inside a building, move
closer to a window.
Go to Settings > Call > Call
barring, and then select
Cancel all call barring.
Go to Settings > Call > Call
barring, and then select
Cancel all call barring.
Go to Settings > Security >
Fixed dial numbers and select
Off to turn this feature off.
Contact your service provider.
If the service provider provides
the (U)SIM card's PUK code,
use the PUK code to unlock
the (U)SIM card.
Delete unnecessary data from
the Contacts.